(modify-syntax-entry ?\( "() " st)
(modify-syntax-entry ?\) ")( " st)
;; It's used for single-line comments as well as for #;(...) sexp-comments.
- (modify-syntax-entry ?\; "< 2 " st)
+ (modify-syntax-entry ?\; "<" st)
(modify-syntax-entry ?\" "\" " st)
(modify-syntax-entry ?' "' " st)
(modify-syntax-entry ?` "' " st)
(setq-local lisp-indent-function 'scheme-indent-function)
(setq mode-line-process '("" scheme-mode-line-process))
(setq-local imenu-case-fold-search t)
- (setq imenu-generic-expression scheme-imenu-generic-expression)
- (setq-local imenu-syntax-alist
- '(("+-*/.<>=?!$%_&~^:" . "w")))
+ (setq-local imenu-generic-expression scheme-imenu-generic-expression)
+ (setq-local imenu-syntax-alist '(("+-*/.<>=?!$%_&~^:" . "w")))
+ (setq-local syntax-propertize-function #'scheme-syntax-propertize)
(setq font-lock-defaults
'((scheme-font-lock-keywords
scheme-font-lock-keywords-1 scheme-font-lock-keywords-2)
nil t (("+-*/.<>=!?$%_&~^:" . "w") (?#. "w 14"))
beginning-of-defun
- (font-lock-mark-block-function . mark-defun)
- (font-lock-syntactic-face-function
- . scheme-font-lock-syntactic-face-function)
- (parse-sexp-lookup-properties . t)
- (font-lock-extra-managed-props syntax-table)))
+ (font-lock-mark-block-function . mark-defun)))
(setq-local lisp-doc-string-elt-property 'scheme-doc-string-elt))
(defvar scheme-mode-line-process "")
(forward-comment (point-max))
(if (eq (char-after) ?\() 2 0)))
-(defun scheme-font-lock-syntactic-face-function (state)
- (when (and (null (nth 3 state))
- (eq (char-after (nth 8 state)) ?#)
- (eq (char-after (1+ (nth 8 state))) ?\;))
- ;; It's a sexp-comment. Tell parse-partial-sexp where it ends.
- (save-excursion
- (let ((pos (point))
- (end
- (condition-case err
- (let ((parse-sexp-lookup-properties nil))
- (goto-char (+ 2 (nth 8 state)))
- ;; FIXME: this doesn't handle the case where the sexp
- ;; itself contains a #; comment.
- (forward-sexp 1)
- (point))
- (scan-error (nth 2 err)))))
- (when (< pos (- end 2))
- (put-text-property pos (- end 2)
- 'syntax-table scheme-sexp-comment-syntax-table))
- (put-text-property (- end 1) end 'syntax-table '(12)))))
- ;; Choose the face to use.
- (lisp-font-lock-syntactic-face-function state))
+(defun scheme-syntax-propertize (beg end)
+ (goto-char beg)
+ (scheme-syntax-propertize-sexp-comment (point) end)
+ (funcall
+ (syntax-propertize-rules
+ ("\\(#\\);" (1 (prog1 "< cn"
+ (scheme-syntax-propertize-sexp-comment (point) end)))))
+ (point) end))
+
+(defun scheme-syntax-propertize-sexp-comment (_ end)
+ (let ((state (syntax-ppss)))
+ (when (eq 2 (nth 7 state))
+ ;; It's a sexp-comment. Tell parse-partial-sexp where it ends.
+ (condition-case nil
+ (progn
+ (goto-char (+ 2 (nth 8 state)))
+ ;; FIXME: this doesn't handle the case where the sexp
+ ;; itself contains a #; comment.
+ (forward-sexp 1)
+ (put-text-property (1- (point)) (point)
+ 'syntax-table (string-to-syntax "> cn")))
+ (scan-error (goto-char end))))))
;;;###autoload
(define-derived-mode dsssl-mode scheme-mode "DSSSL"
(put 'unassigned\?-components 'scheme-indent-function 1)
(put 'unbound\?-components 'scheme-indent-function 1)
(put 'variable-components 'scheme-indent-function 1)))
+\f
+;; Scheme Interaction Mode
+
+(defun scheme-eval-defun ()
+ (interactive)
+ (let ((debug-on-error eval-expression-debug-on-error)
+ (print-length eval-expression-print-length)
+ (print-level eval-expression-print-level))
+ (let* ((value (eval-scheme (thing-at-point 'defun t)))
+ (str (eval-expression-print-format value)))
+ (prin1 value t)
+ (if str (princ str))
+ value)))
+
+(defun scheme-eval-print-last-sexp (arg)
+ (interactive "P")
+ (setq arg (or arg t))
+ (let ((standard-output (current-buffer)))
+ (terpri)
+ (let ((standard-output (if arg (current-buffer) t))
+ (form (buffer-substring-no-properties
+ (save-excursion (backward-sexp) (point))
+ (point))))
+ (eval-last-sexp-print-value (eval-scheme form) arg))
+ (terpri)))
+
+(defvar scheme-interaction-mode-map
+ (let ((map (make-sparse-keymap))
+ (menu-map (make-sparse-keymap "Scheme-Interaction")))
+ (set-keymap-parent map lisp-mode-shared-map)
+ (define-key map "\e\C-x" 'scheme-eval-defun)
+ (define-key map "\n" 'scheme-eval-print-last-sexp)
+ (bindings--define-key map [menu-bar scheme-interaction]
+ (cons "Scheme-Interaction" menu-map))
+ (bindings--define-key menu-map [eval-defun]
+ '(menu-item "Evaluate Defun" scheme-eval-defun
+ :help "Evaluate the top-level form containing point, or after point"))
+ (bindings--define-key menu-map [print-last-sexp]
+ '(menu-item "Evaluate and Print" scheme-eval-print-last-sexp
+ :help "Evaluate sexp before point; print value into current buffer"))
+ (bindings--define-key menu-map [indent-sexp]
+ '(menu-item "Indent" indent-sexp
+ :help "Indent each line of the list starting just after point"))
+ map)
+ "Keymap for Scheme Interaction mode.
+All commands in `lisp-mode-shared-map' are inherited by this map.")
+
+(define-derived-mode scheme-interaction-mode scheme-mode "Scheme Interaction"
+ "Major mode for typing and evaluating Scheme forms.
+Like Scheme mode except that \\[scheme-eval-print-last-sexp] evals the
+Scheme expression before point, and prints its value into the
+buffer, advancing point. Note that printing is controlled by
+`eval-expression-print-length' and `eval-expression-print-level'.
+
+Commands:
+Delete converts tabs to spaces as it moves back.
+Paragraphs are separated only by blank lines.
+Semicolons start comments.
+
+\\{scheme-interaction-mode-map}"
+ :abbrev-table nil)
(provide 'scheme)
HCoop / bpt / emacs.git / blobdiff